Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: F_Zero45 on January 19, 2008, 03:00:52 pm

Title: 25" WG color adjustment help
Post by: F_Zero45 on January 19, 2008, 03:00:52 pm
MY monitor seems to have lost it's WHITE. :dunno
It's like everything that is supposed to be white is a dark grey. Adjusting the RGB doesnt seem to help with the WHITE color. The 'SCREEN , BLK Level & Contrast" dial  doesnt help either. AM i missing something?
Title: Re: 25" WG color adjustment help
Post by: Kevin Mullins on January 19, 2008, 05:04:02 pm
Generally this is adjustable with the colors.
White will be off if any of the individual colors are off.
Best if adjusted with a color bar screen.

What kind of game/cabinet setup is this in? (JAMMA, MAME, etc)
And what model WG is it?
Title: Re: 25" WG color adjustment help
Post by: F_Zero45 on January 19, 2008, 05:14:29 pm
I used color bar to adjust the color. RGB look fine. Its only the white bar looks like a thin black line that fades to grey. :hissy:. It's in a Mortal Kombat game. wg25k7193
Title: Re: 25" WG color adjustment help
Post by: grantspain on January 19, 2008, 05:39:50 pm
hows the +5 looking on the game board
Title: Re: 25" WG color adjustment help
Post by: F_Zero45 on January 19, 2008, 06:00:49 pm
Voltage is fine. Someone told me about rejuvinating the monitor but idk what that is :dunno
Title: Re: 25" WG color adjustment help
Post by: qrz on January 20, 2008, 04:03:52 pm
may be a weak crt . but try this adjustment and see what happens....

w/test pattern displayed ( or stationary video ),
turn contrast and brightness to minimum
turn screen grid up or down until image is barely visable.
then turn up contrast and brightness to desired levels.
with a greyscale display ( steps from blk to white) adjust r,b,g drives so as to have white when properly balanced.
note ; white balance can be difficult to impossible on very weak tubes .

sencore cr70/ cr7000 are examples of crt tester/rejuvinators
see b&k and others ......ebay

qrz